66043423 has 8 divisors (see below), whose sum is σ = 68345856. Its totient is φ = 63751800.

The previous prime is 66043391. The next prime is 66043451. The reversal of 66043423 is 32434066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66043423 - 2⁵ = 66043391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66043391 and 66043400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66040423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10890 + ... + 15832.

It is an arithmetic number, because the mean of its divisors is an integer number (8543232).

Almost surely, 2^66043423 is an apocalyptic number.

66043423 is a deficient number, since it is larger than the sum of its proper divisors (2302433).

66043423 is a wasteful number, since it uses less digits than its factorization.

66043423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5405.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 66043423 is about 8126.7104661111. The cubic root of 66043423 is about 404.2126102919.

Adding to 66043423 its reverse (32434066), we get a palindrome (98477489).

It can be divided in two parts, 66043 and 423, that added together give a palindrome (66466).

The spelling of 66043423 in words is "sixty-six million, forty-three thousand, four hundred twenty-three".